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Finding the Fourth Proportional to 395,679.87, 546,065.01 and 223,538.13

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Solution

The fourth proportional to 395,679.87, 546,065.01 and 223,538.13 is: 308,497.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,679.87 : 546,065.01 = 223,538.13 : x
  2. Step 2: Convert to fraction form
    395,679.87/546,065.01 = 223,538.13/x
  3. Step 3: Cross multiply
    395,679.87x = 546,065.01 × 223,538.13
  4. Step 4: Simplify right side
    395,679.87x = 122,066,351,193.83
  5. Step 5: Solve for x
    x = 122,066,351,193.83/395,679.87
  6. Step 6: Final answer
    x = 308,497.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.